Re: [compost_tea] Re: Flow rate for air pumps

From: <soilfoodweb_at_aol.com>
Date: Fri, 18 Feb 2005 20:39:25 EST

 
I don't know anyone who has tried this, because you get high pressure in a
pressure cooker through heating. The heating will kill the organisms.
 
But you could use an air pump to raise pressure, and thus at warm temps
still get good oxygen in the liquid.
 
Anyone want to give it a try? Interesting thought!
 
Elaine
 
 
 
 


On Fri, 18 Feb 2005 15:33:23 EST, soilfoodweb_at_aol.com
<soilfoodweb_at_aol.com> wrote:
> Values of dissolved oxygen involve both temperature and air pressure. As
> temperature rises, air, or water, cannot hold as much oxygen.
>
> As air pressure decreases, air or water cannot hold as much oxygen.

Do you know if anyone has done any experiments with brewing tea in a
pressure chamber?

The economics would make it prohibitive for commercial applications,
but it seems that it could be an interesting experiment. You could
even raise the level of atmospheric oxygen a bit and see what the
results are then.

Somehow I think I would get in serious trouble if I claimed our
pressure canner for use in a tea brewing experiment.

Dave



Elaine R. Ingham
Soil Foodweb Inc., Corvallis, Oregon
Soil Foodweb Inc., Port Jefferson, New York
Soil Foodweb Institute, Lismore Australia
Soil Foodweb Institute Cambridge, New Zealand
Laboratorios de Soil Foodweb, Culiacan, Mexico
Soil Foodweb Inc., Jerome, Idaho
Soil Foodweb Inc., South Africa








Received on Fri Feb 18 2005 - 23:36:01 EST

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